Mechanical musical instrument.



v H. P. BALL. MECHANICAL MUSICAL INSTRUMENT,

APPLICATION FILED JUNE 13, 1903.

Iiatentev Feb. 1 1911.

H. '1. BALL. MECHANICAL MUSICAL INSTRUMENT.

APPLICATION FILED JUNE 13, 190s.

984,257, Patented Feb, 14, 1911.

4 SHEETSSHEBT 2.

WITNESSES: INVENTOR APPLICATION FILED JUNE 13, 1903.

Patented Feb. 14, 191 1.

4 SHBETS-SHEBT 3.

, .RM W 3 Q 7 Q G O U G O G 00 00 0090 0 0Q 00 09000 OGOO 0000 0000 D000 @QW Q, N WITNESSES:

H. P: BALL.

MECHANICAL MUSICAL INSTRUMENT. APPLICATION TILED JUNE 13, 1903.

Patented Fel1.14,1911.

' sums-5mm 4. FIGS. 2 on 2a a 0 25 v 23 f5 Al I II III-:1}: 1

WHNESSES; INVENTOR 2160111111.- W111 B v I ATTORN Y compre sion. 1

character of the 25 MECHANICAL MUSICAL INSTRUMENT.

oenesr;

foa'll'whom it-"may concern: 7

Be it. known that I, [inner lmon BALL); a citizen 'of the United States, residing at New York city, county and State of New York; have invented certain new and use- 'ful Iniprovements in Mechanical Musical Instruments, of which the following 1s a specification.

This invention relates to mechanical 'inusieal I instruments adapted to be employecl' in connection with a-perfo at-ed music strip having twosets of perforations; one set. ada )ted to produce the acconipanin'ient notes and the other setthesolo or melody notes. The instriune'nt is also provided with means for producing a. sustained note/0r notes for swelling a note or notes from a small to ahigh amount or vice versa; for shifting an or all. of the sound responsive means trnnone set ot' perforations to the other;

ineanshl wish it understood, however, that inlay substitute pipes torsuchreedsandtl' attlie airnsedtor actuating the reedsor p1 pesn exert its pres ure by QXlmH-SUOH or The are l doi'not Wish to limit myselt te the 'partieulajr uerlianism shou'mas it wiltbe obvious that other mechanisms maybe employed act ing in substantially'the same manner, to

produce the same result I in the device which I. have shown in the drawings. the .pneumatic mechanismemb ploved. is adapted tofbe' operated by pressure through exhaust appa atus. ere' arrange the mechanism to operate with oi" the .atinosphere. -1nade' effective HENRY PRICE BALL, ornnw YORK, N; Y., ASSIGNOR or i v i or CHICAGO, ILLINOIS,

Specification of Letters Patent PatentedfF Application filed .Iunel3, 1903. Serial No. 161,261,

tuzited ,or otherwise increased ompanving drawin will serve; to illustrate such an instrmnent as'may be; em- "plo'ved to carry my invention into effect but spaced tracker-ducts- Y air under compression or with both exhaust and compressed an.

In the drawings: Figure 1' is a vertical section of ainechanical 11111810111 instrument;

ONE-HALF T0 SAMUEL INSUQLLQ Bela, 1911 A taken on the line a" s" of Fi 4. Fi 2 is a s detail view ol the connectionsbetween the stops and the valves controlling the air pressure to the soundjproducing devices. Fig. 3 is a similar view thereof," from. the side.

Fig. 4 is a front elevation, partly iii'seetion,

ofthe instrument shown in Fig. 1. Fig. 5 is a horizontal section; taken on the li e gs, of Fig. 4:, portions being broken away'to more clearly show the arrangement of air -passagesfron1the pneumaticsto the reeds.- 1s a detail sectional viewshowmg a" portionfol one of the reedcells. Fig. 7 is a plan. view of the mechanism shown in Fig.

{hand Fig. 8 is an enlarged view of the upper portion of l ig. 1. '9 is a plan View showing {1 130111011 of a perforated music strip and the top of the.tracker-board provided ith two sets of openings or ducts.

10 is'a. detail sectional view, slimving. the low pressure bellovs,

wind-chestfete.

In previous-- applications. ser l humbcrs 91,748 and 14%,259. l have described pneumatic mechanism and its operation for the production 0t two sounds; i! c. a sound having a normal value. and a sound accenabore the normal value, and'as this mechanism is duplicated in my present application. l :llilll therefore describe. it onlvin Qtl'ltl'itl terms.

jret'ei'iing tosuch priorapplication tor a l'ull detaileddescription.

Referring now to the drawn. (:ates the lneloslnnjcastfl of the which may begiven an} suitable shape and construction; e v i A; trackerrboard 6. located H! the usual positionpin' the upper part of the iust'rsr meat. is provided fwitlr two rows of equi and ()ne series 7, which I shall hereina't'lcr term. lh col'npaninieiiti t-racltendmtsl roi'iperal the accompaniment perforations 11') (a in the music strip; F in. 9 to prod u. -.e or eon'ibinati'on of notes within the range (it the instrument and the other series 8, to

' 5 indithe equalizing be termed, the solo tracker-ducts, cooperates in a similar manner with' the solo perforations of the music. strip to produce the sounds upon a separate set or sets of sound producing devices.

Arranged to move over the tracker-board 6, is a perforated music strip 9, a portion of which is shown on an enlarged scale, in Fig. 9. This strip as shown is provided with three perforations l0, l0 and 11. The accompaniment perforations l0, are adapted to register with the aceon'ipaniment tracker-ducts 7, and the solo perforation 11, with the solo trackenduct 8. It will be observed, that the relative positions of the perforations l0 and 11, correspond to that of the Ll't'lCkGF-(lLlCtS 7 and 8.

Located below the tracker-board 6, are the pneumatics, arranged in sets of three, one set capable of cooperating for each sound to be produced and these I term, 12, the primary pneumatic, 13, the secondary accompaniment pneumatic, and ll, the secondary solo pneumatic. The primary neumatics 12, are controlled by the sound tracker-ducts 7, through air passages 20, leading therefrom to the chambers below the diaphragms 10, the space above the diaphragms communicating with the main wind-chest 60. The air passage 26, from the primary pneumatic to the secondary pnemnatic 13 communicates with the high pressure wind chest and the atmosphere, through valved-ports i5, 25. Bleed holes are provided for exhausting air trapped in the passage 20. The secondary accompaniment pnenmatics 13, are controlled by the primary pneumatics through the air passage 26 leading to the chamber below the diaphragm 27. The space above the diaphragms Culllll'llllllCtttGS with the wind chest 75. 33, leading from the secondary pneumatics 13, communicate with the wind chest 75 and the atmosphere through valved ports 32, 32. The secondary solo pneumatics 14, are controlled by the solo tracker-duets 8, through the air passages 15, which lead therefrom to the chamber beneath the diaphragn'i 17, the space above the diaphragm communicating with the main wind chest (30. The air passage 3 from the secondary pneumatic-S 13 and it connnunicate directly with the pas sage 28 to the reeds and with the main wind chest (it) and the passages 38 and 34 to the reeds, through valved ports I18 and if).

The operation of the pnelnnatics in producing a sound ordinarily played in the ac eoinpanilnent For example, is as follows: \Vhcn a note perforation, such as 10 reg istcrs with the sound trzmlter-duct'7. air at atmospheric i l'(r-', lll(f enters through pas-sage 20 beneath the diaphragm oi the primary pneumatic and raises the same as shown at. 12, Fig. 1, opening the passage 26 to the exhausted into The anpassages atmosphere through the port and closing the port 25 between this passage and the high pressure wind chest. The passage 26 leading beneath the diaphragm of the secondary pneumatic L) being now open to the atmosphere, air enters and raises the secondary pneumatic 13 as indicated at 13 Fi l, closing the port 32 between the passage 33, and the atmosphere and also the port 32 through which this passage communicates with the wind chest 75. The valve disk 21, however, being spring supported, yields to the greater pressure in the passage 33, and the communieating'passages leading therefrbm to the reed cells, and the air therein exhausts through port 32 into the wind chest, 75. The primary and secondary pneumati'cs are maintained thus adjusted, to sustain the note sounded, while the tracker-duct 7 remains open to the atmosphere. As this duct is closed by the passing of the note perforation, the air trapped in the passage 26, is I the wind chest through the bleed holes 26*, and the pneumatics drop by gravity and resume their normal positions, indicated at 12, 13"., Fig. 1. It will be observed that during this operation, the secondary solo pneumatic. 14 remains inactive,

Before describing the operation of the pnenmatics in the roduction of a solo note, I would again call attention to the use in this instrument of a music strip, identical in all respects to thatcmplOyed in connection with the piano-playing mechanism of my prior applications above referred to. The solo perforations 11,' (shown in Fig. 9) which may be given any suitableform, such as circular, for example, are of uniform size throughout the sheet and while such a perforation when accompanying a sustained note perforation, would operate in connection with either piano or organ playing mechanism, at theinstant the note is sounded, yet to produce the desired result, it will be evident, that to sust-ain an organ note, the initial adjustmentof valves must. be maintained during the full length of the note, and as the opening and closing of the solo tracker-duet 8, occurs at. the instant the note is sounded, means must be provided for continuing the relation of the valve mecha- 'nisms, untilthe accompaniment perforation has passed the tracker-duct 7. For this purpose, I provide a communicating openingbetween the passages 26 and 15, the same being in the form of a port 22, opening from the chamber audio 3. into the passage between the solo lrmfln-r-dlu-t R and the chan'ibcr beneath the diaphragm ol' the secondary pneumatic l4. 'lhi port is controlled by a. flexibly hinged valve 23. held normally open by a spring 94'. The primary and secondary pn auuatics in responding to a note perforation l0 unacbcnealh the secondary pneucompanied by a solo perforation; 11, will operate in the manner as above described and the secondary pneumatic l-l will. be inactive, as at such times, 'the atmospheric pressure in the passage 26 will overcome the spring and close the valve 23.

I will now describethe operation of the pneu'matw in producing a solo note.

Assumin a note perforation 10 and a solo perforation 11, (Fi 9) to register simultaneously with their respective trackerducts, both passages 26, 15, will be open to theatmosphere. Air will then enter beneath the diaphragms of both secondary menmatics. As the pressure is equalin the passages 15, 26, abo've and below the valve 23 it will remain open. Under the pressure admittedQboth secondary pneumatics will. be

raised to'the position indicated at li-l 1. 1", Fig. 1. T1118 results 1n causing the sec- "ondary pneumatic 13 t-o'close both ports 32,

32 as above described and the secondary pneumatic 14L to open the ports 18, between the passages 33 and the main wind chestGO and close the passage 34 leading to the reed cells. In other words, it establishes communication between the-reed cells'and the main Wind chest through passage 28, and thereby produces a tone on those reeds opened to passage 28 and not-on those reeds opened 1 hausted into the main wind chest 60 through .the bleed holes lf 'andint o wind chest75 through 'bleed holes -26 and the s eve 'al pnumatics will assume their initial posi- In describing the operation of the pri nary and secondary pneumatic in, responding to a note perforation uimccmnpanied by a solo perforation, the valve disk 21 was refer-red t0 asyielding, to permit the air in passage 33, to exhaust into the low pressure wind chest. Gbvibusly. therewouldbe no yielding action of this disk when both seciondary pneumatics are lifted, as the passage 33 at such time coln'nuinicaltes with the main wind chest and consequently the greater pressure below. the spring-supported disk holds the latter closed.

I haveshown assound producing devices,

- singly or in combinations to the action of either of the secondary pneumat-ics by which they are controlled, but it will be understood, that pipes may be substituted therefor, without involving material change in the construction or arrangement of the instrun'icnt. 7

Referring nowto' Fig l and 5. it Will be seen, that the reeds are arranged in twosets of four rows each, and located immediately' inthe rear of the pneumatics. Such a-rrangeinent however is made-merely for con- -venience in connecting the reed cells with theair passages lead ing from the pneumatics and may be altered and the number of sets of reeds increased or reduced as maybe desired. "In the present instance, the; secondary pne'umatics 13 and 14, are operatiyely connected with the cells of four, sets of reeds, 35, 36, 37, 38, through passages 34,

I shall hereinafter term 34 the accompaniment exhaustpassage and 28, the solo exhaust passage. These passages opening outof'the passage 33, extend rearward beneatlrthe cells and are each provided with b anches 34?, 28, leading upward therefrom to the reeds, there being a separate l)l;-ll1(.l'l from each passage to each reed. Controlling each of the branches of the accompaniment exhaust passage, there is a valve 29, in

the form of a; fiat strip provided with a sereeds .in or out of communication with either or both of the passages 34k, 28. From the foregoing it will also be seen, that the main exhaust alone is active, when the instrument responds to note perforation 11, to produce a solo note and that whenresponding to an ordinary note perforation 10 only the. pressure in windchest 75 is active. It follows therefore, that by adjusting one or. more of the valves 29 coiitrolling the solo exhaust passage 28, between the reeds and the pneumatics, the corresponding set orsets of=reedsmay be rendered rciponsive to such solo note perforations, whicl I would here observe.

usually represent the melody and by a slim lar adjustment of one or more of the valves 29, the ordinary note perforations or the ac.- companimei'it may .beplayed on either the reeds responsive to the melody notes or on any other set-0r sets the operator may pre-. ,fer. 4 i

valves 29 and 29 I provide suitable mechanism, by means of which they may be con-' For convenience in operating the trolled by'a series of stops 30, 31, located in I the normal the front of the instrument as shown in trated in detail the valves and connections for controlling one set of reeds. As shown, 39 and 40 are vertical rods mounted in the frame and connected by means of crankarms and links 41, 42, with the slide valves 29, 29. Each rod at its upper end is provided with'an additional crank-arm 43, and a horizontally disposedrod 44, cennecting this crank arm with one of the stops 30 or 31. lVhen a stop is pushed in, as indicated at 30 in Fig. 5, the .valve occupies the position shown in Fig. G'and communication is closed between the branch passages 34", for example, and the adjoining set of reeds. When the stop is drawn out as indicated at 30", the valve is adjusted through the connections described and the openings therein are caused to register with the branch passages 34 thereby 'opening communication between the exhaust passage proper and this set of reeds.

I will now describe how a note produced,

either as a normal sound or a solo note, may be further modified or swelled and its intensity varied, at the will of the operator. For this purpose, I have shown in detail, two sets of connections, one set, which may be said to control the melody or solo notes, being shown in an adjusted position and the other set, controlling the accompaniment, in position. By means of separate slides 58, 59, within convenient reach of the operator, either or both sets of connections may be adjusted to produce the effect desired.

Referringagain to Figs. 2 and 3, crankarms 45, 4c. are shown fast on the vertical rods 39 and 40, above referred to. These crank-arms are linked to cam'arms 47, 4S, pivoted to bars 49, 50, the connection being such, that as either of the rods 39 or 40 is rotated, by the action of the operator in drawing out a stop, the cam'arm connected therewith, will be turned on its pivot until the high'point thereof is adjusted into operative relation with an extension of a valve or shutter 55 cooperating with the cell of the particular set of reeds selected. Obviously, now, by lifting a bar, the cam carried thereby will raise the shutter, and open the reed cell to a reator or less extent cansing the notes to be sounded with increased or decreased intensity. It will be understood, that with the shutter in its normal position, 0., closing the reed cell, as shown at 55", Fig. 1, the tones produced from this set of reeds will be softened and also, that as theshntter is raised and lowered to increase and decrease the extent of opening to the cell,'the intensity of the tones will be correspondingly varied. The adjustment. of the shutter is effected by, raising and lowering either of the bars 49 or 50, they being for this purpose separately connected at their upper ends to crank-arms 51, 52, fast on shafts 53, 5-4, which latter are horizontally disposed and extend toward the front of the instrument, as shown in Fig. 1, where they are each connected, by means of crank-arms 5o, 56, and bars 57. 57. to controlling slides 58, 511. Thus it will be seen, that by shifting the controlling slide in one direction, the cam may be lifted to raise the shutter and b a reverse movement of the slide, the shut- ,ter will be closed.

The operation is as follows: Those sets of reeds. which are to respond to the solo or melody and those for the accompaniment notes are sel cted by the operator by drawing out the stops. Assuming now thatthe rod ltl xl ig. to be rotated by one of the stops selected, the valve 2!), will be adjusted to open conununication between the set of reeds it ontrols and the exhaustpassage to the pncinnatics aml the cam 48, will be moved into operative rchtion with the shut tcr55. If now the instrument is operated, all notes to which this set of reeds respond, will be reduced in inten ity and softened, as the reed cell is closed by the shutter To swell one or more of the melody notes, the operator moves the proper controlling lever 58, gradually or suddenly aecm'ding to the etfect desired, and thereby rotates the shaft 53, which in turn, lifts the bar 49 and causes the cam carried thereby to raise the shutter and open the reed cell, as indicatede at 55, Fig. 1. the. exteiit of opening depending upon the movement of the controlling lever, determining the intensity of the sound produced.

I obtain the exhaust pressures and regulate and control the same in a similar manner as described in my previous application above referred to and it will therefore not be necessary for me to enter into a detailed descriptimrof the construction and oper tion of the apparatus employed for this purpose as the present invention is not limited to the use of the same. It sutliees to say, that the particular apparatus illustrated consists essentially of one or more feeder bellows 70, mounted on the back of the wind chest (30 and suitably valved and operated by means of foot-treadles 71, to maintain an exhaust pressure in the wind-ehest.- High and low pressure equalizing bellows 72, 73,

are monntedto cooperate with the hi l1 pres:-

sure wind-chest, the high pressure bel ows 72, being in permanent commumcatlon therewith through an opening 72, while the low pressure bellows is connected through a valved opening 74, as indicated by dotted lines in Fig.- 1 and in Fig. 10. t

Located between and connecting the high low pressure chests.

and low pressure wind' chests, there is an equalizing wind chest which serves to limit. the volume of high pressure exhausted air which is thrown at any time into the low pressure wind chest and aids in maintaining a constant dili'ercnce between the high and of this chest are controlled by a valve 76.

operated through snitable connections by .means for selecting" certain tones and sounding them, and means separate from said selecting means controlling the duration of thetones sounded.

2. A mechanical musical instrument comprising a series of tone producing devices, means for selecting certain tones and soundinc them, and separate auton'iatic means controlling the duration of the tones-produced.

3. fr mechanical musical instrun'icnt comprising a series of tone producing devices, means for sounding the tones, means for swelling the tones, and separate automatic means controlling the duration of the tones produced.

-l. A. mechanical musical instrument comprising a series of tone producingdevices, two controlling connections for each device, means for throwing the series of tone producing devicesdiom on'c connection tov the other, means for selecting certain tone pro ducing' devices and causing them to speak, and automatic meafns controlling; the duration of the tone produced. 1

A mechanical. musical instrument conr prising a series of tone producingdevices, two controlling connections for each device, nicans for throwing the series of devices from one connection to the other, means for selecting certain tone tn'oducing devices and causii'ig them to speak, and means coiiperatinn with the selectingmeans controlling the duration of the tones.

(3. A mechanical musical instrinnent-comprising a number of series of tone producing; devices, a source of energy, pneumatic connections between the tone producing de vices and the source oi energy, a tracker hoard having; two series of openings therein. diafph ragm pncun'iatics and primary valves between one series of tracker open lugs and the source of energy, and diaphragm mcumatics between the other series of tracker openings and the source of energy, antomat ic valves controlling the saidv connections, and means cooperating with said automatic valves tocanse the tone pro- The openings or parts ducing devices to respond to either series of tracker openings.

7. A mechanical musical instrun'ient com prising a number of series of tone producing devices, two sources of energy, a tracker board having two series of openings, two connections tor each tone producing device, valve mechanisms situated between the openings in the tracker board and the tone producing devices. l'OfIQtl1Gl'3Vll'll coactiugimeans for throwingdillerent series of tone pro-,

(lacing devices into connection with either source at energy. I

8. A inechanial musical instrument comprising a tracker board having two series of ducts, devices responsive to one series of: ducts for controlling the tones to be produced, devices responsive to the other series of ducts for modifying the tones produced,

and pneumatically open-Med means cotipcrseparate from the last named responsive devices. a v

9. A. mechanical n'iusical instrument com prising a tracker board'havingr two series of ducts, pneumatic mechanism responsive to one series, additional pneun'iatic.mechanism responsive to the second series, and cooperating means for continuing one of the. pneumatic mechanisms in action for a definite period of time and outof control of its tracker ducts after it has responded to the same.

10. A mechanical musical instrument com prising; a series of tone producing devices; source of energy, a tracker hoard. having two series of openings in. staggered relation, controlling valves between said openings and said tone producing devices, means for determiningwhich of the tone producing d vices shall be responsive to the respective openings in the tracker board, and automatic means separate fromsaid last mentioned means and cooperating with one series of tracker openings and their corresponding valves for :ontrolling the period of the response when the other series is in operation.

11; A. i'nechanical musical instrument coinprising a series of tone producing devices, a source of energy, a tracker board having two series of openings arranged in staggered relation, valve i'necl'ianism introduced between said openings and said tone producing" devices, means for determining which oi. the tone producing; devices shall he responsive to the two series of openings, means scparateftrom said last mentlonednieans co operating with one series of valved passages for controlling the period. of the response when the other series is in operation, and means for controlling the'volume of the 12. A mechanical musical instrument comprising a series of tone producing devices, a source of energy, a tracker-board having two series of openings therein, a series of valved passages for each series of openings, means for determining which of said tone producing devices shall be responsive to said openings, and automatic means separate from said last mentioned means cotipcrating with one series of valved passages when the other series .is in operation for controllingthe response of each tone producing device.

13. A'uaaihanieal musical instrument c0mprising a series of tone producing devices, a source of pneumatic energy, means for direl-ting;- the energy exerted, means for controlling the effectof said energy upon said tone producing devices, means com rising two series of valved passages adaptet to be controlled by a traveling perforated sheet for selecting said tone producing devices and causing them to speak. and separate automatic means controlling the durati n of the tones produced through the medium of one series when the other series is in opera.- tion.

H. A. mechanical musical instrument. comprisinga series of tone n'oducing devices, a source of energy. means for throwing said tone producing devices into and out of connection with the source of energy, means for modifying the tone produced by said devices, means comprisingtwo series of valved passages adapted to be controlled by a travcling master sheet for i eltcting' the tone producing devices and cau ing them to speak. and separate automatic means cooperating with one series of valved passages when the other series is in operation for controlling the duration of the tone produced.

A mechanical musical instrument comprising a series of separate and independent tone producing devices, a source of energy. requisite connections between each tone produring" device and the source of energy, a separate controlling: device in each connection, a valve controlling both connections, and a valve controlling one of said connections.

16. A mechanical musical instrument comprising a number of series of tone producing devices, a source of energy, independent means for. controlling the volume of tone irtuneach series of tone producing. devices, means for controlling the value of the force exerted from the source of energy. together with mean's for selecting the tone producing devices anrljcausing them to speak.

17. A mechanical musical instrument comprisinga tracker-board having two series of ducts therein, a series of tone-producing deices. two sources of energy, two series of diaphragm pneumatics, valves and connections, each coaeting with a duct in its series and terminating ateach' tone-producing dt vice, and requisite valves operatin independently to throw the tone-producing devices in and. out; of connection with either source separately from the other source of energy or together to connect said toneproducing devices with one source of energy.

18. A mechanical musical iustrmmnit coinprisinga tracker board having two series of tracker duets, mechanism responsive. to one series for sounding musical notes. mechanism responsive to the second series for modifyingthe sounds produced. and pneumatic means for continuing the sound modifyingmechanism in action for a period determined by the first named mechanism.

19. A mechanical mus cal instrument com; prising a tracker hoard having two series ot, tracker ducts. a series of pneumatics connected to one series of tracker ducts, sound producing mechanism responsive to such pneumatics and adapted to produce musical sounds. a second series'ot' pneumatics coir uected to the second series otdraclo-r ducts, connections under the control-zit such pnenmatics for modifying the sound produced,

and pneumatically actuated means cooper-- ating with the second s ries of tracker ducts for continuing; the last named pneumatics in action for a period determined by the length of the note sounded.

20. A mechanical musical imarument comprising two series of tracker ducts. a series of pneumatics connected to one set of tracker ducts, sound producing mechanism re ponsive to such pneumatics; and adapted to produce musica. smilids ot definite value, an additional series of pucumntics ct'mnccted to the second series of tracker duets, connections under the control of such pneumatics tor modifying tl action of the sound producing mechanism, and cparate automatic means coiiprrating with the first series of tracker ducts and their connections for continuing; the last named pnemnatics in action for a period determined by the length of the note sounded.

it. The ctunbination ot a tracker-hoard having two series of duct-utlwrein, a series of pneumatically operated valve's,n1e:ois for selectimg' certain of said valves and causing them to act. and cooperating controlling; means for varying the periods of action of said valves.

22. A mcchanicid musical ii'istrument comprising' a moving nmsic strip prt'rridel with two series ol pcrl'oratimui, one serie arcom-,

paniment perfoiatimis and the other series solo pert'oratitms. a tracker board having two series of tracker ducts therein mrre sponding in number and adapted to register with said two series of perforations of the music strip, mechanism ope ated by air entering through one series of tracker ducts adapted to actuate aresponsive device to' praalurc 111us1cal tonesof normal value, andunatic means operatin separately from inevlmnisnr tor prolonging the tones produced. said means being actuated by the air entering through the" other series of tracker ducts.

:2 A mechanical musical. instrument comprising a 111ovi11g music strip provided with two series oi note perforations, one series varying individually in length accompani- ;1nent perforations, and the other series of uni'tman length solo perforations, a tracker board havmg two series of tracker ducts therein corresponding 1n nmnber and adapted respectively to register with said accoin-' paniment perforations and said solo perforations of the music strip, mechanism operated by air entering through one series of tracker ducts adapted to actuate a. responsive device to produce organ ,tones of normal 'alue,.

mechanism actuated by air entering through the other series of tracker ducts adapted to modify the tones produced, and means for continuing the tones as modified for a period determined by the length of the note perforations after the solo perforations have passed the tracker ducts. v

24:. A'mechanical musical instrument comprising two series of pneumatics, a set of passages leading to each series of pneuinatics, and normally open valved ports con necting the passages in pairs.

A mechanical musical instrument comprismg atraclwrdmard ha v.1ng two senes of duets therein two series oil" pneiunat ies, a set;

of passages leading to each series of pneumatics, and valved ports connecting the passsages in pairs.

2t mechanical 1.11usical instrument comprising a tracker bar having two series of ducts arranged in parallel relation, 11. Series of tone producing devices,pneumatics between said tone producing devices and said ducts, passages connecting said tone producing devices and said p1'1eun'n1tics, selecting valves for said passages, energy producing pressure apparatus, passages con1'1ect1ng said energy producing apparatus and said pneumatics, separate passages leading to said pneuniatics and under the control of said ducts, and means for controlling the volume (it sound from said tone producing device.

'27. A mechanical musical instrument comprising a tracker bar l'1avingt1vo series of ducts, a serui. of tone producing devices, a

series of primary pncumatics and a series of secondary pneumatics, a series of high ten sion pneuiuatics, a. set of passages rendering said. priinaryand secondary ')neun'1atics subject to one series of tracker ducts, a separate pa ssa ges.

set of passages for rendering said high pressure pneumatics under the control of the other series of tracker ducts, a high tension apparatus connected to said high tension pneumatics by passages, low tension apparatus connected to said secondary pneumatics bypass res, passages between said high and low tension pneumatics and-said tone-pro- 'ducing devices, means for controlling said last named p assages,.and means for controlling the volume of sound produced. 1

A'niecha'nical musical instrument comprising a tracker-board with main and-auxiliary ducts in pairs, requisite pneumatic valves, a main passage leading from the main tracker ducts to the pneumaticval'ves, an auxiliary passage leading to the valves under the control of the auxiliary ducts, and a maintaining valve controlling a port. between each Hill of main and auxiliary 29. .Xuuathaninl musical instrument coinpr1s1ng a tracker-board provided with a 11111111 and an auxiliary duct 111 pa rs, requi- 1 site pneumatic valves, a nrain passage leadling a port between the main and auxiliary passages.

31. A mechanical musical instrument comprising a tracker-board provided with a main and an auxiliary duct, requisite pneumatic valves, a main passage leading from the main tracker ducts to the pneumatic.

valves, an auxiliary passage leading to the valves under the control of the auxiliary ducts, andcan automatic maintaining valve, said valve beingspring-held, normally open and controlling a portbctn een the mainand auxiliary passages. p

v 32. A mechanicalmusical instrument comprising :1 tracker-board provided with a main and an auxiliary duct, requisite pneunui tir valves, a main passage leading from the main tracker ducts to the pneumatic alves, an auxiliary passage leading to the "alves; under the control of the auxiliary h1cts.and' an auton'iatic maintaining valve controlling a port between the auxiliary and main passages from the tracker-board, said *alve beingarranged to be closed by the lllil vl'tlfik} oi pressure in the main aud auxilia1' passages. i

'J" A nieelmuieal musieal iusiruiueui emuprisiug a i]':l(l\'(l-lJOtll'(l provided Willi a main and an auxiliary duet, requisite pneumatic valves. a main passage leading from the main ti'aeker ducts to the pneumatic valves. an auxiliary passagg'e leading in the.

valves under the centre] of the auxiliary ducts, and an aulmuatie maintaining valve controlling a port between the auxiliary and g I I main passages from the tracker-board, said valve being moved 1n one directlon by a spring. and in the opposite direction by a ilill'erenee in pressure in the main and auxiliary passages.

In testimony whereofl] affix my signature, iu the presence of twe witnesses.

HENRY PRICE BALL. \Yiluesses:

(. H. \UM Bani, I. "VEIKTIIEIMER. 

